Leopold wacks



UNITED STATES PATENT OFFICE.

LEOPOLD \VACKS, OF LONDON, COUNTY OF MIDDIQESEX, ENGLAND.

ARTIFICIAL FUEL.

SPECIFICATION forming part of Letters Patent No. 398,810, dated February 26, 1889.

Application filed May 1, 1888 Serial No. 272,618. (No specimens.) Patented in England December 1, 1887, No. 16,501; in Belgium February 23, 1888,1T0. 80,750, and in Spain February 28, 1888,1Io. 7,959.

To aZZ whom it may concern.-

Be itknown that I, LEOPOLD WAoKs, a sub- 5 ject of the Queen of Great Britain, residing at London, in the Kingdom of Great- Britain, have invented a new and useful Composition of Matter to be IIsed for Fuel as a Substitute for Coal, (for which I have received the following patents: in BelgiunnNo. S0,750,dated 3 February 23, 1888; in Spain, No. 7,959, dated I February 28, 1889,) of which the following is a specification.

My composition consists of the following ingredients, combined in the proportions stated, viz: coal-dust, ten per cent; sawdust, ten per cent; clay, titty per cent; sand, nine per cent. saturated solution of saltpeter, I one per cent; tar, twenty per cent. These I ingredients I mix so as to form a soft mass, from which I form blocks of convenient size for handling. In forming these blocks heatand pressure may be used if it be desirable to prepare the fuel rapidly; or if time be no object, after having been formed, the blocks I may be allowed to dry at ordinary tempera- I tures. hen thus prepared, my compound I will be found to be a very convenient and useful fuel, a very cheap substitute for coal, which may be successfully used in stoves, furnaces, &c.

The coaldust, sawdust, and tar in the con1- position are the parts introduced to supply comlnistioi'l. The saltpeter is introduced to increase the heat given off. The sand and clay are introduced as binding material, to hold the mass in compact form, and also to prevent too great rapidity of combustion.

Actual experiment has shown that this compound burns slowly and brightly, and at the same time emits considerable heatenough for all ordinary purposes.

The amount of any of the said ingredients might be varied if it be thought proper. Thus a smaller amount of sawdust and a larger amount of coal-dust might be used, and again the sand might be replaced by asbestus, and the tar might be replaced by creosote or crude petroleum; but I consider the formula above given to be the best for the purpose.

For use in hotcountries, where the inflammable gases escaping from this compound might be easily lost or make the compound dangerously easy to ignite, the blocks, when formed and dried, may be dipped in a solution of glue to cover them with a surface of size through which the gas will not escape.

hat I claim as my invention, and desire 1 to secure by Letters Patent, is

The herein-described composition of matter to be used for fuel as a substitute for coal, consisting of coal-dust, sawdust, clay, sand, solution of saltpeter, and tar, substantially in the proportions specified.

In witness whereof I hereunto set my hand in presence of two witnesses.

LEOPOLD \VACKS.

Vitncsses:

L. S. BRonHEAn, 97 Neu'gutc Street, London.

WALTER J. SKERTEN, 1T Gracechurch StreezflLondon, E. (I. 

